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(11)

EP 2 637 996 A1

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(43) Date of publication: 18.09.2013 Bulletin 2013/38 (21) Application number: 11827782.1 (22) Date of filing: 26.10.2011

(51) International Patent Classification (IPC):  C07C 51/087(2006.01) C07C 53/08(2006.01) C07C 51/44(2006.01) (86) International application number: PCT/US2011/057785 (87) International publication number: WO 2012/074628 (07.06.2012 Gazette 2012/23)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 12.11.2010 US 413234 P 30.12.2010 US 982150 (71) Applicant: Eastman Chemical Company Kingsport, TN 37660 (US)

(72) Inventors: BARRON, Jerry, Allan Gray, TN 37615-2139 (US) EARLS, Brandon, Tyler Kingsport, TN 37664 (US) FILLERS, Carl, Franklin Greeneville, TN 37743-4430 (US) KLINE, Robert, Sterling Kingsport, TN 37664 (US) WELLMAN, Gregory, Abbott, Jr. Kingsport, TN 37663 (US) (74) Representative: Wibbelmann, Jobst  Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2 81541 München 81541 München (DE)